Box-forming machine



3 Sheets-Sheet 1 S COOPER BOX FORMING MACHINE Original Filed'giug 2,1920 April 28, 1925.

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Original File'd Aug, 2, 1920 5 Sheets-Sheet 2 vwmto; 51 7770 Cooper ssheeissneet 5 cJwve/ntoz 52 757077 ('aoper 351 ai homey;

S COOPER BOX FORMING MACHINE Ormgmal Flled Aus; 2 1920 00 mos April28,1925.

Patented Apr. 28, 1925.

UNITED STATES PATENT OFFICE.

SIMON COOPER, OF NEW YORK, N. Y., ASSIGNO'H, BY MESNE ASSIGNMENTS, TOTHE GUARDIAN SAVINGS AND TRUST COMPANY, OF CLEVELAND, OHIO, A CORPDBA-TION OF OHIO.

BOX-FORMING MACHINE.

Application filed August 2, 1920, Serial No. 400,709. Renewed September15, 1924.

To all whom it may concern:

Be it known that I, SIMON COOPER, a citizen of the United States, andresident of New York city, in the county of Kings and State of New York,have invented certain new and useful Improvements in Box-Fornr ingMachines, of which the following is a specification. 1

The invention relates in general to a box forming machine andparticularly refers to the parts of such machines for uniting the endflaps of paper box blanks after the blanks have been subjected to thegumming steps in the process of manufacturing the same. i

It is a usual practice for the manufacturer to cut and score the blanks,ship them in flat condition to the user and for the user to glue theends or flaps by a machine of the type forming the subjectmatter of thisdisclosure. The machines are therefore not infrequently used where thereis a limited supply of power available and yet the sealing of the gluedends of the boxes require relatively great pressure and this isespecially true in manufacturing heavy cardboard or corrugated boardboxes.

Accordingly, one of the primary objects of the invention is to provide asimple form of paper pressing or clamping machine, which will exert apowerful pressure on the paper, which will possess a massivenesssufficient to withstand the usage to which such devices are subjectedand at the same time provide a construction which can be actuatedrapidly from a source of relatively low powered energy usually availablein light manufacturing plants.

The invention features a construction in which the jaw elements of theclutch are formed of massive parts and in which the movable element iscaused to work over a relatively small distance under the powertheclutch at least once when set in operation and which will stopautomatically in its open position when released of its manual control.

Various other objects and advantages of the invention will be in partobvious from an inspection of the accompanying drawings and in part willbe more fully set forth in the following particular description of oneform of mechanism embodying my invention, and the invention alsoconsists in certain new and novel features of construction andcombination of parts hereinafter set forth and claimed.

In the accompanying drawings Figure l is a vertical sectional view of amachine constituting a preferred embodiment of the invention and takenon the lines 1 -1 of Figure 3;

Figure 2 is a view in side elevation of the device shownin Figure 1; and

Figure 3 is a horizontal sectional View taken on the line 3-3 of Figure1.

In the following description and in the claims, parts will be identifiedby specific names for convenience of expression but they are intendedtobe as generic in their application to similar parts as the artwillpermit.

I11 the drawings there is shown a heavy base casting of a generalU-shaped form in plan to accommodate the actuating mechanism between theparts thereof. The baseis provided on its front side with an upstandingpillar 11 to the front face of which is bolted a heavy castinghereinafter identified as a jaw post guide 12, and which is coextensivewith the l'ieight of the pillar 11.

The upper portion of the guide is provided with a forwardly extendingprojection 13 in the form of a massive ledge or anvil constituting thefixed jaw of the clutch. This fixed jawis designed so as to receive theparticular form of a box element which is desired to be pressed and itis obvious that by substituting a different form of guide and anvildifferent types of articles to be pressed may be received on the uppersurface of the fixed jaw. The guide 12 is of channel shape and isprovided adjacent its upper end with a relatively large pin 14:, whichextends through the channel-way and is fixed at opposite ends in theflanges 15 and 16 of the guide 12. This channel member constitutes arelatively long and vertically disposed guideway in which is slidablymounted a j aw post 17 which is also channel shaped and fashioned to fitsnugly in the guideway provided by the guide 12. The

I upper end of the post 17 is provided with a forwardly extending head18 which constitutes the movable jaw of the clutch and is designed tomove with the post 17 to and from the fixed jaw 13. It is to beunderstood that this movable jaw like the fixed jaw is of heavy massiveconstruction, or at least of such ruggedness of construction that itwill resist distorting strains when in use.

The flanges 19 and 20 of the jaw post 17 are provided with verticallyextending slots 21 to accommodate the fixed pin 14: and to some extentcoacts therewith to guide the jaw post in its vertical reciproc-atorymovements. The jaw post fits snugly in its guideway and it is one of thefeatures of this disclosure that the bearing provided thereby isrelatively long and tends to minimize distorting action between thejaws. The lower end of the jaw post is provided with a forwardlyextending foot 22 through which is extended a stud 23 adjustably mountedtherein for vertical movement and held in locked position by nuts 24.

The movable jaw is reciprocated in its guideway by means of a toggle 25which extends lengthwise of the passageway, is contained largely withinthe outlines of the post 17, and is pivotally connected at its upper endto the massive pin 14 and at its lower end to the stud 23 throughpivotal joints 26. The upper link 27 of the toggle is pivotallyconnected to the lower link 28 of the toggle by means of a relativelymassive connecting pin 29. The connecting pin 29 is recipro catedhorizontally over a relatively short distance and across the lineconnecting the axis of the pivotal joints 28 by means of a horizontallydisposed eccentric strap 30 which extends rearwardly of the machine andis actuated by an eccentric 31 loosely mounted on a drive shaft32journalled in the base 10 adjacent its upper portion. The shaft 32 isdriven from the pulley and flywheel 33 through the reducing gearconnection 34 disposed at the rear portion of the machine and thisorganization of driving parts tends to balance the machine from front torear. The eccentric 31 is driven from the shaft 32 through a ratchet 35fixed to the shaft and a pawl 37 pivotally mounted on a pawl shaft 37carried by the enlarged portion of the eccentric. The pawl is normallymaintained in operative engagement with its ratchet by means of a spring38. A sliding bolt 39, slidably mounted in the frame is normallydisposed in the path of movement. of the revolving pawl so as to causethe pawl to be withdrawn from the ratchet when the eccentric hascompleted its cycle of movement.

The bolt is controlled from a foot actuated pedal 40 through a system oflevers and reach rods 41 and the bolt is held in projected position,when free of the pressure of the operators foot on the pedal, by meansof a spring 42 connected to one of the reach rods 41.

The shaft 32 may also be utilized as a source of power for actuatingother elements of the machine, such for instance, the gluing roller (notshown) and for this purpose the shaft is provided with a driving gear43.

In operation and assuming that the parts are in the position shown inFigure 1 with the fiy-wheel 33 actively disposed and with the flaps ofthe box to be glued in condition ready for the pressing operation, theflaps are inserted in position on the fixed jaw and beneath the movablejaw and when the operator steps on the pedal 40.

The depression of the pedal acts through the reach rod connection 41 towithdraw the bolt 39 from its pawl holding position, thus permitting thepawl actuating spring to move the pawl into engagement with the activelyrotating ratchet. The rotating ratchet picks up the pawl and actstherethrough to turn the eccentric in its rotary movement. The eccentricacts through the eccentric strap and reciprocates the midportion of thetoggle as previously described. As the upper end of the toggle is heldrelative to the machine as a whole the action of the toggle is first toeffect a downward movement of the lower end of the jaw post, causing theupper jaw to approach the fixed lower jaw. On the succeeding movement ofthe eccentric to cause the strap to move positively in the oppositedirection the upper jaw is moved back to its initial position. Thisaction will continue, the movable jaw reciprocating up and down in itsguideway as long as the operator holds the bolt in its inoperativeposition, to permit the revolving pawl to clear the same. As soon as theoperator releases pressure on the pedal the bolt is repositioned by itsspring in the path of the pawl and the pawl in its rotary movement comesin contact with the bolt, is rotated on its shaft and cleared of therevolving ratchet. The machine is thus brought automatically into itsinitial position and is ready for the succeeding pressing step.

By means of a device of this character it is possible to effectively andeconomically press the paper box parts together and while the machine ischaracterized by massiveness of parts the action is smooth and rapid andfree of the vibration and jerky movements which have heretoforecharacterized devices of this type.

As the device is intermittent in its action, power can be stored in asuitable fly-wheel during the periods while the machine is inactive andthe stored energy becomes immediately available when needed to exert itspowerful force through the toggle to press the paper between thepowerful jaws. All of the known advantages of a toggle as a power agentare present and the parts can be so designed to give a final, quick andpowerful punch to the final action of the movable jaw.

A refinement of adjustment between the jaws is possible and thisadjustment can be made simply by screwing a couple of nuts and does notnecessitate any change in the driving mechanism.

While I have shown and described, and have pointed out in the annexedclaims, certain novel features of my invention, it will be understoodthat various omissions, substitutions and changes in the form anddetails of the device illustrated and in its operation may be made bythose skilled in the art without departing from the spirit of theinvention. 7

Having thus described my invention, I claim 1.111 a paper box makingmachine, the combination of. a heavy base, an anvil demountably securedto the front side of the base and constituting the lower jaw of a clamp,said anvil provided with a vertically extending guideway, a jaw postslidably mounted in said guideway, having a long bearing therein andprovided with a movable jaw coasting with the anvil to form the clamp,rotary power means carried by said base adjacent the rear side thereofand means carried by. the base between said power means and said jawpost for translating the rotary movement of said power means intorelatively short but powerful reciprocatory movements of the movablejaw. i y r 2. In a paper box making machine, the combination of a heavybase, an anvil constituting the lower jaw of a clamp, said anvilprovided with a vertically extending guideway, a jaw post slidablymounted in saidguideway, having a long bearing there in and providedwith a movable jaw coacting with the anvil to form the clamp, rotarypower means carried by said baseand a toggle connecting the base andpost to reciprocate the post in its guideway and thus cause the movablejaw to move relative to the anvil and an eccentric drive between therotary power member and said toggle.

3. In a machine for pressing the flaps of cardboard boxes, thecombination of a base provided with a relatively massive anvilconstituting a fixed jaw of a clamp provided with a post guideway, a jawpost slidably mounted in said guideway and provided with a jaw movabletherewith and coacting with the fixed jaw to form the clamp and powermeans acting on said jaw post substantially parallel to its guideddirection of movement for reciprocating the movable jaw to and from thefixed massive jaw.

4. In a machine for pressing the flaps of cardboard boxes, thecombination of a base provided with a relatively massive anvilconstituting a fixed of a clamp provided with a post guideway, a jawpost slidably mounted in said guideway and provided with a jaw movabletherewith and coacting with the fixed jaw to'i'orm the clamp and atoggle connection operatively connected to the post for reciprocatingthe movable jaw to and from the fixed massive jaw over a relativelyshort distance and means for applying power to the toggle over arelatively long distance per unit of movement.

5. In a device of the class described, the combination of a support, acard-board receiving jaw carried thereby, means providing a jawguideway, a movable jaw slidably mounted in said guideway and coactingwith said first named jaw to clamp the cardboard therebetween, atwo-linktoggle extending lengthwise of the line of movement of the guided jawhaving one end fixed to the movable jaw and the other end fixed to saidsupport, means for controlling the limit of movement of the movable aw,reciprocating means engaging the common connection betweenthe links ofthe toggle for changing the angular relation of the links thereby toreciprocate the movable jaw of the clamp and means for actuating saidreciprocating means.

6. In a device of the class described, the combination of a fixed aw, arelatively long guideway, a movable jaw post slidably mounted in saidguideway and provided with a jaw carried thereby for movement to andfrom the fixed jaw, said post having a long bearing in said guideway, atoggle extending lengthwise of said jaw post and having one end attachedthereto in spaced relation to the jaw to reciprocate the same over arelatively short distance controlled by the guideway, power meansengaging the toggle intermediate its ends and in spaced relation to thejaw to actuate the toggle and means for adjusting the relation of thelever to the movable aw.

7. In a device of the class. described, the combination with a fixedjaw, a channel member providing a relatively long upstanding guideway, apin fixed to and extending across said guideway, a channel-shaped jawpost slidably mounted in said guideway and provided with aligned slotsin opposite flanges to receive said pin whereby the pin assists inguiding the post, a jaw fixed to the upper end of the post and coactingwith the fixed jaw to clamp paper box members therebetween, a toggleextending lengthwise of the guideway having its lower end fixed to thepost and its upper end fixed to said pin and means engaging the toggleintermediate its ends to actuate the same and thus cause the jaw carriedby the post to reciprocate relative to the fixed jaw.

8. In a device of the class described, the combination of a fixed jawfor receiving apart of a paper box, a movable aw coacting therewith toform a clamp to press the box parts, means for guiding said movable aw,a toggle extending lengthwise of said guiding means and adjustablyconnected at one end to the movable jaw to actuate the same, aneccentric provided with a strap reciprocated thereby and operativelyconnected to said toggle to actuate the same, a power means adapted toact continuously and a manually actuated control for connecting thepower means at will with said eccentric to cause the same to functionwhile under said manual control.

9. A device for pressing parts of paper boxes in the manufacture of thesame, including a fixed jaw and a movable jaw coacting therewith, atoggle extending lengthwise of the direction of movement of the movablejaw and means for connecting one end of the toggle to the movable jaw tocause it to reciprocate relative to the fixed jaw, said connecting meansbeing adjustable in the direction lengthwise of the direction ofreciprocation of the movable jaw whereby the travel of the movable awrelative to the fixed jaw may be varied at will to accommodate differentthicknesses of box parts between the aws when in their relative closestposition.

10. A device for pressing parts of paper boxes in the manufacture of thesame, including a fixed jaw and a movable jaw coacting therewith, a.toggle extending lengthwise of the direction of movement of the movablejaw, means acting over a preset distance for applying power to thetoggle, means for connecting the lower end of the toggle to the movablejaw, means for securing the upper end of the toggle in fixed positionand means for adjusting the normal relative. positions of the ends ofthe toggle thereby to control the approach of the movable jaw to thefixed jaw while actuated by the constantly applied power.

11. In a device for pressing box parts in the manufacture of paperboxes, the combination with a support provided with a fixed jaw, anupstanding guideway, a jaw post slidably mounted in said guide-way andprovided with a jaw coacting with said fixed jaw to form a clamp forpressing the box parts together, a pin fixed to said support, a studcarried by the post, a toggle extending lengthwise of said guideway andpivoted at opposite ends to said pin and stud, and means for adjustingthe position of the stud relative to the jaw post thereby to vary therelative approach of the jaws.

12. In a device for pressing box parts in the manufacture of paperboxes, the combination with a support provided with a fixed jaw, anupstanding guideway, a jaw post slidably mounted in said guideway andprovided with a jaw coacting with said fixed jaw to form a clamp forpressing the box parts together, a pin fixed to said support, a studcarried by the post, a toggle extending lengthwise of said guideway andpivoted at opposite ends to said pin and stud, an eccentric operativelyconnected to said toggle at a point. intermediate its end to cause saidpoint to move over a fixed distance and adjusting means for varying therelative movement of the pivoted ends of the toggle thereby to vary theapproach of the movable jaw relative to the fixed jaw.

13. In a device of the class described, the combination of a fixed aw,guiding means, a movable jaw mounted in said guiding means forreciprocatory movement relative -to the fixed jaw, a drive shaft, atoggle operatively connected at its lower end to the movable jaw tosupport and to actuate the same, an eccentric mounted for rotarymovement on said drive shaft and operatively connected to the toggle toactuate the same, a normally inoperative driving clutch connectionbetween the drive shaft and the eccentric and a manually actuatedcontrol for causing said clutch connection to become operative.

14. In a device of the class described, the combination of a fixed jaw,guiding means, a movable jaw mounted in said guiding means forreciprocatory movement relative to the fixed jaw, a toggle adjust-ablyconnected at its lower end to the movable jaw to actuate the same, aneccentric mounted for rotary movement and operatively connected to thetoggle to actuate the same, a drive shaft, a driving clutch connectionbetween the drive shaft and the eccentric, a manually actuated controlfor causing said clutch connection to become operative and means formoving said clutch connection automatically into an inoperative positionwhen the eccentric has completed one cycle of movement.

15. In a device of the class described, the combination of a movablejaw, a toggle for reciprocating the same, a drive shaft, an eccentricfor actuating the toggle mounted on said drive shaft, a ratchet fixed tothe shaft and a pawl carried by the eccentric and adapted to engage theratchet to effect a driving connection between the shaft and theeccentric.

16. In a device of the class described, the combination of a movable aw,a toggle for reciprocating the same, a drive shaft, an eccentric fOractuating the toggle mounted on said drive shaft, a ratchet fixed to theshaft, a pawl carried by the eccentric and adapted to engage the ratchetto effect a driving connection between the shaft and the eccentric andmeans for moving the pawl into an inoperative position.

17. In a device of the class described, the combination of a pair ofjaws adapted to have a relatively short operative movementand adapted tohave part of a paper boX clamped therebetween under high pressure, powermeans acting under substantially uniform force operatively connected toone of the jaws to move the same towards the other jaw, said power meansincluding a power multiplying toggle mechanism for causing the movablejaw to move into operative posi tion with a rapidly decreasing speedthereby to affect a long powerful pressure dwell on the boX parts andmeans for controlling the limit of movement of one of said jaws relative to the other.

18. In a device of the class described, the combination of a pair ofjaws, a toggle operatively connected to cause said jaws to approach andthus constitute a clamp as the toggle is moved into its position withthe arm of the toggle aligned and power means having a substantiallyuniform force acting on said toggle to affect the clamping action of thejaws.

19. In a machine for pressing the flaps of cardboard boxes together withglue the combination of a base provided with a relatively massive anvilconstituting a fixed jaw of a clamp provided with a post guideway, a jawpost slidably mounted in said guideway and provided with a jaw movabletherewith and coacting with the fixed jaw to form the clamp, and powermeans acting on said jaw post substantially parallel to its guideddirection of movement for reciprocating the movable jaw to and from thefixed massive jaw and including lost motion means for retaining the jawsin closed position for a predetermined length of time sufiicient topermit the glue to set.

Signed at New York city, in the county of New York and State of NewYork, this 25th day of July, A. D. 1920.

SIMON COOPER.

